nested simulations in the south florida coastal seas with ...sofla-hycom: flah0.04 run numbers and...
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Nested simulations in the South Florida coastal seas with the HYCOM model
Villy Kourafalou, Ge Peng and Heesook KangUniversity of Miami / RSMAS
In Collaboration with
Pat Hogan, Ole Martin Smedstad and Alan Walcraft (NRLSSC)Bob Weisberg (USF)
Peter Ortner, Libby Johns (NOAA-AOML)
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SOUTH FLORIDA NESTED MODELSNested in GOM-HYCOM: GOMh0.04
GOMh0.04 1/25o resolution: Idm=517 jdm=349 kdm=20; 98oW-77.36oW; 18.90oN–30.71oN; 2 m minimum water depth
SoFLA-HYCOM1/25o resolution:
idm=161
jdm=163
kdm=20
83.76oW–77.36oW
22.78oN–28.61oN
FKEYS-HYCOM1/100o resolution
idm=437
jdm=361
kdm=26
83.36oW–79.00oW
22.78oN–26.05oN
SoFLA
FKEYS
minimum water depth: 2m
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The complex South Florida coastal system
Lee et al., 2002
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Local Observational Data Coverage in the SoFLA DomainLocal Observational Data Coverage in the SoFLA Domain
WERA coverageCSTAR coverage
USF buoys locations
: moorings: c-man stations
DT: Dry Tortugas LK: Looe Key san: Sand Key smk: Sombrero KeySR: Sharker River CR: Caloosahatchee River
: Cable sanDT
A1B1
LKsmk
SW FL Shelf
CR
SR B2C2
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Interdisciplinary monitoring around the river influenced areasin support of the Everglades Restoration Project
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SoFLA-HYCOM: FLAh0.04 Run Numbers and Attributes
2004,2005NCODA GOMh0.04coamps 27km2602.5
2004,2005Free GOMh0.04coamps 27km2601.5
2004,2005ATLd0.08coamps 27km2603.5
2004Free GOMh0.04Fnmoc-1.02602.1
2004Free GOMh0.04Fnmoc-0.502004.1
2004, 2005NCODA GOMh0.04coamps 27km2027.1
2004Free GOMh0.04coamps 27km2007.1
2004ATLd0.08fnmoc-1.02039.1
2004, 2005NCODA GOMh0.04fnmoc-1.02029.1
2004, 2005Free GOMh0.04fnmoc-1.02009.1
Simulation period
Nesting BCAtm. ForcingLayersRunID
HYCOM v. 2.1.34, 2.1.35
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A1B1
20m40m
LK
Model-Data Comparison: inner shelf
Energy peaks are in phase over all
For the SW Florida shelf shallow moorings (#A1 and #B1):
•No obvious phase bias between model and data
•The maximum cross-correlations occur at the zero lag which are above the 99% significance level
•Model currents larger in amplitude
•Wind-driven circulation dominates
•Free and NCODA runs very similar
For the Florida Keys shelf mooring at Looe Key:
•Model currents have energy comparable to observations in the low-frequency band but are less energetic for the synoptic bands, suggesting FC influence
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Simulation of coastal to offshore interactions during an eddy passage April 2004
Apr 08
Apr 11
Apr 14
Apr 17
Apr 20
Apr 23
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Along-Shore Current reversal at Looe Key during the eddy passage
81.4W, 24.65N
April 2004
eddy enters
•40 HLP data (rot. 73 deg.) prepared by Ryan Smith, NOAA/AOML
Model to Data comparison
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Free: Pat Hogan NCODA: O-M. Smedstadt
Noticeable improvementon positions of Loop Currentand eddies
7-days, 5/24-31/2004,Aqua-chlaProvided by Viva Banzon, RSMASSatellite group
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3-hourly winds & hourly mooring data=> Daily filtering
SoFLA-HYCOM
Model-Data Comparison: #C13 (COAMPS 27 km winds )
“Floats” code by G. Halliwell
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3-hourly winds & hourly mooring data=> Daily filtering
SoFLA-HYCOM Data missing
Model-Data Comparison: #C17 (COAMPS 27 km winds )
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3-hourly winds & hourly mooring data=> Daily filtering
SoFLA-HYCOM
Model-Data Comparison: #C19 (COAMPS 27 km winds )
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Vertical-Time Section: FLAh0.04 C19 01/01/04-12/31/05 LP Rot=15o
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Locations of the Cable and Model Sections
WestPalmBeach Eight Miles Rock
20m40m
Cable
SoFLAh0.04
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Statistic Characteristics: SoFLAh0.04
Florida Current Transport: 2004 and 2005
3.371.881.663.001.961.89STD
31.3832.6232.0231.8132.4631.85Mean
CableNCODAFreeCableNCODAFree
Year 2004 Year 2005
Missing Cable data: 2004: 9/04-10/28; 12/26-12/282005: 7/26-8/03; 10/25-10/26; 12/08
Model data for those days are removedbefore computing the means and stds.
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Cable Data and HYCOM: FC Transport at 26.7N Year 2004
FC transport at 27oN is not sensitive to the current changes in resolution of the local atmospheric forcing or the adopted increase in vertical layers
The Atlantic basin-wide circulation plays an important role in inducing larger fluctuations of the FC transport
FC transport of ATLd091 and archive files of GOMh200 were provided by Ole Martin Smedstad, NRLSSC.
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High resolution FKEYS domain:nested open boundaries and topography
20 grids relaxation zone along boundariesE-folding scale of 0.1 to 5-days in a relaxation zoneDaily updating for barotrophic &
baroclinic BCs
NRL_DBDB2 with
2m minimum water depth
More realistic passages between Keys
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May 29 2004 00Z
May 30 2004 00Z(+1 day)
May 31 2004 00Z(+2 days)
June 01 2004 00Z(+3 days)
June 02 2004 00Z(+4 days)
June 03 2004 00Z(+5 days)
June 04 2004 00Z(+6 days)
June 05 2004 00Z(+7 days)
June 05 2004 06Z(+7 days 6 hr)
June 05 2004 12Z(+7 days 12 hr)
June 05 2004 18Z(+7 days + 18hr)
June 06 2004 00Z(+8 days)
FKEYS-HYCOM SSH: mesoscale and submesoscale eddy activity
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FKEYS FKEYS
SoFLA SoFLA
FKEYS vs. SoFLANear sfc currents and salinity
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• Compare FKEYS results with data (same as SoFLA plus WERA)
• Determine the relative importance of resolution, BC’s, forcing in nested simulations
• Couple FKEYS with BOLTS (BiOlogical Lagrangian Transport System)
Future Work
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BOLTS: Coupled with 1/12o NAT-HYCOMWill be done with 1/100o FKEYS-HYCOM
Spatial recruitment of Damselfish onto coral reefs resulting from monthly virtual spawning events along the Florida Keys
Spatial distribution of passive particles released from the same reef areas after a 30-day pelagic transport within the upper layer (10-20m) of the 1/12o NAT-HYCOMParis et. al (in prep.)
Active Transport Passive Transport
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Regional HYCOM modeling at UM/RSMAS